– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 pm Wed 16 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 10 pm Wed 16 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Warm (max 23°C on Thu afternoon, min 13°C on Fri night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Warm (max 21°C on Sun afternoon, min 10°C on Mon night). Wind will be generally light. | |||||||||||||||
Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | | | | | | | | | | |  |  |  | |
clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | clear | some clouds | rain shwrs | some clouds | |
Cloud base (m) | 9000 | 8950 | 9000 | 1900 | 1800 | |||||||||||
km/h | ||||||||||||||||
 |  |  |  |  |  | |||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 0.1 | — |
max °C | 17 | 21 | 23 | 17 | 18 | 20 | 15 | 17 | 20 | 16 | 19 | 21 | 16 | 16 | 17 | 13 |
min °C | 16 | 17 | 22 | 14 | 14 | 20 | 13 | 14 | 20 | 14 | 15 | 21 | 13 | 12 | 17 | 10 |
chill °C | 16 | 17 | 22 | 14 | 14 | 20 | 13 | 14 | 20 | 14 | 15 | 21 | 13 | 12 | 17 | 10 |
Freezing level m | 3950 | 4000 | 3950 | 3850 | 3800 | 3800 | 3850 | 3900 | 3850 | 3950 | 3950 | 3900 | 3750 | 3250 | 2800 | 2450 |
 | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — |
 | — | — | 7:16 | — | — | 7:14 | — | — | 7:12 | — | — | 7:09 | — | — | 7:07 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Warm (max 23°C on Thu afternoon, min 13°C on Fri night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Warm (max 21°C on Sun afternoon, min 10°C on Mon night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.